Reaktion #1987009

Reaktionsgleichung

KOH

p-aminoacetophenone

2-amino-4-chloro-6-methylpyrimidine

HCl

→

amino-2-amino-6-methylpyrimidine

Lösungsmittel

water

Reaktionsbedingungen

Aufarbeitung

1. 1
   Temperaturheated
2. 2
   Temperaturat reflux for 1 hr
3. 3
   Sonstigegave a light buff solid, which
4. 4
   Filtrationwas filtered out
5. 5
   Sonstigedried

Vorschrift

A suspension of p-aminoacetophenone (1.35 g) and 2-amino-4-chloro-6-methylpyrimidine (1.435 g) in 20 mL water was treated with 0.85 mL conc HCl and heated at reflux for 1 hr. Addition of 20 mL 1N KOH gave a light buff solid, which was filtered out and dried to give 2.28 g acetylphenyl)amino-2-amino-6-methylpyrimidine, mp 194°-196° C. Of this, 1.21 g was treated with methyl iodide (3 mL) in dimethylformamide (15 mL) at room temperature for 42 hr. Dilution with ethyl acetate and filtration gave 1.11 g 4-(4-acetylphenyl)amino-2-amino-1,6-dimethylpyrimidinium iodide as a white powder, mp 302°-3° C.

Quelle